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Old June 25, 2009, 19:47   #13
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Regarding the section "Diamond walls, point visibility". A possible disadvantage is that, for certain arrangements of pillars, you can end up with disconnected regions of visibility (i.e. a dotted line of visible tiles which do not touch)
Incidentally, these artifacts are the result of allowing line-of-sight to pass through tiles which aren't visible. In other words, a line going to the center of tile A is obstructed by some other intervening wall, making tile A invisible. But a line which passes through the corner of tile A is allowed to go through (since it doesn't intersect the diamond), and therefore you may end up with disconnected visible tiles on the far side of tile A.
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